Fire-extinguisher.



H. M. McCASLIN. FIRE EXTINGUISHER. APPLICATION FILED MAR. 13. 1916.

Patented Nov. 7, 1916.

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HARRY M. McCA SLIN, 0F ELMIRA, NEW YORK, ASSIGNOR TO AMERICAN LA FRANCE FIRE ENGINE COMPANY, INC., OF ELMIRA, NEW YORK, A CORPORATION OF NEW YORK.

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To all whomit may concern:

Be it known that I, HARRY M. McQAsLIN, a citizen of the United States,-'res1dmg at Elmira, in the county of Chemung and State of New York, have invented certain new and useful Improvements in Fire-Extin guishers, of which the following is a full and clear specification.

The present invention relates to improvements in fire extinguishers of the portable or hand type, in which a fire extinguishing fluid, such ascarbon tetrachlorid, is carried in a suitable tank or container provided with a hand-operated pump, which causes the fluid to be projected through the dischargenozzle of the container in a thin stream, which can be conveniently directed upon a fire.

This type of extinguisher is usually pro. vided with means for maintaining communication between the discharge nozzle and the lowest part of the tank or container,

. whatever position the tank may be held in,

said means being connected with the nozzle, either-directly or through the pump, so as to permit the-discharge of the entire contents of the tank orcontainer in any desired direction.

The present invention comprises a fire extinguisher of the. portable type, provided with an interiorly arranged diaphragm pump operated from without and adapted to effect the discharge of the extinguishing liquid from the container.

The diaphragm pump comprises two flexible'metaldiaphragms secured at their edges to a connecting ring to form an alternately contracting and expanding chamber commu-- nica-ting'throughvalved passages with the interior o fgtheextinguisher tank and the i exterior-air. -One of the diaphragms is centhrough a suitable opening in thehead of the tank and connected 1 with an operating trally secured to a rigid brace suitably fastened in'the extinguisher tank, while the other diaphragm is centrally secured to a reciprocating rod or. plunger, extending hand lever mounted upon the tank. A discharge nozzle is also preferably mounted upon the head of the tank adjacent to the operating handle and a communicating pipe leads from the interior of the .tank to the discharge nozzle, which is preferably pro vided with a controlling cook. The handle noon the stemof the'cock is presented in Specification of Letters Patent.

' Patented Nov. "Z, 1916.

the plane of the operating hand lever of the pump, which lever is formed with a vertlcal slot extending through it to permit the handle of the cock to pass therethrough and to turn at right angles for locking the pump handle against movement.

In order that the invention may be fully understood I will first describe the same with reference to the accompanying drawlugs and afterward point out the novelty more particularly in the annexed claims.

In said drawing,Figure l is a vertical longitudinal sectional view of a fireextinguisher having my improvements applied thereto; Fig. 2.is, a similar view of the upper end of the extinguisher, showing the pump mechanism in a shifted position; Fig. 3 is a detail side elevation of part of the head of the extinguisher showing the-J-discharge nozzle and controlling cook, the pump operating mechanism being omitted; Fig. 4: is a plan view of the extinguisher head.

In the drawings, 1 is a cylindrical tank or container for holding an extinguishing liquid, such as carbon .tetrachlorid. This tank 1 has secured to it at one 'end a removable head 2 from which all of the operating parts are supported. A discharging pipe 5 passes through a suitable opening in the head 2 adjacent to one wall of the container 1, and is formed with an inturned end 5*, approximately midway between the ends of the tank. A three-way coupling 10 is mounted upon the end 5 and extending oppositely from the coupling 10 are the flexible metal branch pipes 15, 16, whose open ends are presented adjacent to the opposite ends of thetank. Weights 17 are carnied upon the free ends of the branch pipes 15, 16. Coupled valves 18, 19 are mounted in the three-way coupling 10. This arrangement of branched discharging pipe, formed of flexible metal tubing, is the same as cov-.

ered in my application-Serial No. 81872,

filed March 3rd, 1916, and is not specifically preferred. The discharge nozzle 30 is supported upon an integral lug 31 of the head 2. The valve casing 25 carries a two-way controlllng valve or cock 26, having a'fiattened elongated handle 27 secured to the upperend of the valve stem.

40-is a suitable curved metal brace secured to the interior of the tank 1, adjacent to the head 2 and rigidly mounted in this brace 40 is a tubular block 41, hollowed out to form 'a valve chamber, in which is seated a spring actuated ball valve 42, normally closing the passageway 43.

45 is a flexible metallic diaphragm mounted centrally upon the block 41 and secured around its circular edge to the lower edge of a connecting ring or band 46, which is supported by the diaphragm 45. A second diaphragm 47 is secured at its circular edge to the upper edge of the .connecting ring 46 to form with the ring and lower diaphragm 45 an inclosed chamber, which is alternately contracted and expanded for pumping air. Centrally secured to the upper diaphragm 47 is a rod or plunger 50, which passes through and is j ournal'ed in, a central opening51 of the head 2 and is formed with a central port or passageway 53, connected at its outer end with the inlet air port 54 and at its inner end with the valve chamber 55, in. Which is mounted the spring actuated ball valve 56, which normally closes the opening through the port 53. The valve chamber 55 opens into the pump chamber between the diaphragms 45 and 47.

is the operating handle freely pivoted at 61 in bracket post 62 upon head 2 and formed with a central longitudinal slot 63,

in which is received the upper end of the rod' or plunger 50. The plunger 50 carriesat its upper end a cross pin 58, which is seated in the longitudinal side slots 64 of the lever 60 to effect an operative connection between the lever and the plunger. The lever 60 is also formed with an elongated slot 65, adjacent to its handle end '60 to receive the elongated handle 27 of the cock 26, so that when the lever isin its lowest position the handle 27 can be turned to shut ofl the outlet nozzle 30 and simultaneously to lock the lever 60 in its movement.

The contracted position of the diaphragm pump is shown in Fig. 1, while the expanded position of the pump is shown in Fig. 2. The extinguisher can be held in any convenient position to direct. the stream in the desired direction and while thus held the lever 60 is worked up and down to cause the diaphragm pump to alternately expand and tion, forces the extinguishing liqui contract with the result that successive charges of air are drawn into the pump chamber and expelled therefrom into the interior of the tank 1. The compression of air in the tank 1, by this pumping o eraout through the system of discharging pipes to the discharging. nozzle. It has been ex plained in the above named application how the flexible discharging pipes aways lead from the lower part of the tank or container and insure the outflow of liquid and prevent thplk escape of the air being compressed in the ta I claim:

1. In an extinguisher, the combination of other diaphragm at its center, a hand lever pivotally mounted upon the container and connected with the outer end of said rod, and valved inlet and outlet ports to the chamber between said diaphragms.

3. In an extinguisher, the combination of a fluid container, a'discharge nozzle therefor, a pump supported in said container, a hand lever pivotally mounted upon the container and operatively connected with said pump, and a turn cock controlling the nozzle passage way and adapted to engage the hand lever and lock it against movement.

4. In an extinguisher, the combination of a fluid container, a discharge nozzle therefor, a pump supported in said container, a pump rod passing through a bearing. opening in a wall of said container, a hand lever pivotally mounted upon the container and connected with said rod and formed with a slot, a turn cock in the nozzle, and a handle on the stem of said cock adapted to enter said slot and engage said hand lever.

HARRY M. MGCASLIN. 

